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  • Test whether image loaded correctly with JavaScript

    - by johkar
    I have an image deployed on several application servers (green up arrow: uparrow.gif). I have an application server status page where I list out all the servers and with a corresponding image where the image's source is the uparrow.gif for that server. If the image does not load (server down) I would like to switch to a red down arrow (downarrow.gif). Is there a way to check whether an image loaded or not with straight JavaScript (no JS libraries etc)? I would imagine I would set an interval for it to continue checking if the user were on the page. Thanks.

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  • Can you select an element with two classes in jQuery

    - by Petras
    I have an element that has two classes but can't seem to select it with jQuery. Is it possible. Here's the code: <html> <head runat="server"> <script type="text/javascript" src="abc/scripts/jquery-1.4.2.min.js"></script> <script type="text/javascript"> $(document).ready(function() { alert($(".x.y").html()); //shows null, I want it to show "456" }); </script> </head> <body> <div class="x" class"y">456</div> </body> </html>

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  • It's possible to don't pass in GET some fields of a form?

    - by avastreg
    I have a form with some input texts passed in GET, and i don't want to have in GET all the fields; i want to avoid empty fields. So, a concrete example for: <form method="GET" action="an_url"> <input type="text" name="field1"/> <input type="text" name="field2"/> <input type="text" name="field3"/> <input type="submit" value="submit"/> </form> I supposed that fields disabled by html attribute "disabled" shouldn't be passed to GET. So i have done a js (based on jquery) to disable empty fields on submit, something like this: $("form").submit(function() { $(this).find("input[type=text]").each( function () { if (!$.trim($(this).val())) { $(this).attr("disabled", "true"); } }); }); However, this doesn't work. Any ideas?

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  • How to read directory using jQuery .ajax()?

    - by C.W.Holeman II
    Using jQuery .ajax() to read "./ex.html" returns the expected contents of the file. Using the same call just changing the request to "./" does not return an expected directory listing. <html> <head> </head> <body> <script type="text/JavaScript" src="jquery.js"></script> <script type="text/JavaScript"> alert($.ajax({type: "GET", url: './ex.html', async: false}).responseText); alert($.ajax({type: "GET", url: './', async: false}).responseText); </script> </body> </html>

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  • javascript ajax variable question..

    - by Kelso
    Hey there, new to AJAX, JS.. Im trying to add to a Javascript/Ajax search script that I've put together. Previously, it had a single search field, called search_word, I added one called search_date. $(".search_button").click(function() { var search_word = $("#search_box").val(); var search_date = $("#datepicker").val(); var dataString = 'search_word='+ search_word; if(search_word=='') { } else { $.ajax({ type: "GET", url: "searchdata.php", data: dataString, In the Ajax, it appears to pass data of dataString, to my processing script. How do I add search date to the dataString so that I can use that var in my searchdata.php? In searchdata, I can do this $search_word=$_GET['search_word']; and use that var, but so far every time i attempt to alter the dataString, it breaks all the other functionality. Thanks!

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  • WAS Server - Apache critical problem

    - by murali
    hi, I am facing critical problem for integration of WAS Server-Apache Server.I am using the WAS server for the connection pooling for the database calling...and my webpage is hosted in the apache server and the webpage serarch box is calling the WAS Server and i am using struts frame work for autocomplete action... but it is working in IE of all versions.. but it is not working any browser... the JS file HTTPsuggestions are going to the structs frame work... but the response is is giving as null even i am giving the xmlHttpGetSuggestions.status =200 || xmlHttpGetSuggestions.status =0 but i am not getting the autocomplete feature. can you please help to slove this problem..... Thanks, Murali

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  • How to get value of a input field in Javascript

    - by gaurav.mishra280295
    I am using valums-file-uploader plugin. It allows me to upload files using ajax. I have a problem with it. I have the following script- <input type="text" id="Gaurav" name="Gaurav" /> <script src="fileuploader.js" type="text/javascript"></script> <script> function createUploader(){ var uploader = new qq.FileUploader({ element: document.getElementById('file'), action: 'do-nothing.php', params:{param: document.getElementById('Gaurav').value}, allowedExtensions: ['jpg', 'jpeg', 'png', 'gif'], minSizeLimit: 1, debug: false }); } // in your app create uploader as soon as the DOM is ready // dont wait for the window to load window.onload = createUploader; </script> In it, I want to set the value of param entered by the user. The code is working properly for default value of Gaurav, but didn't work for user inputted value.

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  • Rails i18n and routes in javascript

    - by StefanS
    Sometimes it would be really handy to have the Rails localization files available in JavaScript. Same is true for for the routes helpers. I found these two plugins which are exactly doing this: Exposing i18n to JavaScript: http://github.com/fnando/i18n-js Rails Routes in JavaScript: http://tore.darell.no/pages/javascript_routes My questions: Are there any other plugins / gems doing similar things like the two above? What's the right approach in Rails? Meta tag? Additional data- attributes? Thanks for any input!

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  • Separation of logic from presentation: HTTP variable names?

    - by Allan Jardine
    Hello all, This could probably be considered an academic question, rather than a real world one - but throwing it out to see if anyone has any great ideas! We all know that keeping the business logic of an application separate from the presentation is a good idea (I'm looking at web-apps atm), but there needs to be an understanding between the business logic for what HTTP variables to expect (and then process) and the variable names which are sent by the presentation layer. Is this simply a matter of telling the designer what variable names to use in a template? The template doesn't need to know what the variable names are (unless using them for JS/CSS selectors), so why should they be 'hardcoded' in there. Or should the business logic put the names into variables to be printed out? Another layer of complexity for the templates? Does anyone have any experience of this, or thoughts on how to deal with it? Thanks, Allan

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  • asp:Menu Not working on webhost

    - by Brian
    I'm using Visual Studio Web Express 2008 to develop an ASP.Net website. I have a master page that every page inherits from and on that master page I have the asp:menu control. On my local machine the menu control works just fine. The javascript is emitted and the links work as well. However, when I upload it to my webhost service provider, the javascript is not emitted and my links do not work. I'm getting a feeling that my service provider really doesn't know much about .Net as they suggested that I make sure that I upload the .js files which isn't necessary. Does anyone have any suggestions that I can give them? They're asking me what requirements are needed. It seems to me that something is not setup on their server properly but according to them, they have .Net 3.5 SP1 installed.

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  • Choosing between ExtJS and YUI based of application parameters.

    - by Kabeer
    Hello. I need help in taking call to choose between Ext JS and YUI libraries. Here are the key factors I have derived from my application requirements & development process: Complex, windows forms like controls Widgets, Layouts, Utilities Inter widget communication Easy to extend Easy to learn Intuitive & concise coding Strong exception handling Active support / community To update with upcoming technologies (HTML5, etc.) Skins & Themes to be easy to change Skins & Themes to support variety (a text box for different context to appear differently) Support & Utilities for standard protocols (XmlHttp, JSON) Good performance (responsive) Cost is not crucial, but I don't mind saving :)

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  • How can I add methods from a Java class as global functions in Javascript using Rhino?

    - by gooli
    I have a simple Java class that has some methods: public class Utils { public void deal(String price, int amount) { // .... } public void bid(String price, int amount) { // .... } public void offer(String price, int amount) { // .... } } I would like to create an instance of this class and allow the Javascript code to call the methods directly, like so: deal("1.3736", 100000); bid("1.3735", 500000); The only way I could figure out for now was to use ScriptEngine engine = new ScriptEngineManager().getEngineByName("js"); engine.put("utils", new Utils()); and then use utils.deal(...) in the Javascript code. I can also write wrapper functions in Javascript for each method, but there should be a simpler way to do this automatically for all the public methods of a class.

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  • Html string replace a span's class doesn't work in IE?

    - by SeanJA
    Someone tried to recreate smarty in js: // actually from a template file, not hardcoded in the javascript html = '<span class="{test}">yay</span>'; html = change(html, 'test', 'foo bar'); function change(html, key, value){ html = html.replace('{'+key+'}',value); html = html.replace('%7B'+key+'%7D',value); return html; } element.innerHTML = html; In FF this works fine (as expected): yay In IE 7/8 and probably 6... it gives me this: <span class="foo" bar="">yay</span> Why does it create the extra attribute instead of doing what I expected it to do?

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  • Storing DOM reference elements in a Javascript array

    - by webzide
    Dear experts, I was trying to dynamically generate DOM elements using JS. I read from Douglas Crockford's book that DOM is very very poorly structured. Anyways, I would like to create a number of DIVISION elements and store the reference into an array so it could be accessed later. Here's the code for(i=0;i<3;i++){ var div=document.body.appendChild(document.createElement("div")); var arr=new Array(); arr.push(div); } Somehow this would not work..... There is only 1 div element created. When I use the arr.length to test the code there is only 1 element in the array. Is there another way to accomplish this? Thanks in advance

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  • Google chrome extension: local storage

    - by Rohan
    Hi there I'm developing an extension for Google Chrome, and have run into some trouble.I created an options.html page and added it to the manifest.json file.The page shows properly. I saved the options, and then went back to the page on which the extension is supposed to run. Unfortunately, the Local storage for the options was returning a 'null' instead of the option. If I set the local storage option directly from the extension's JS script, it works fine but not if it was set from the options page. Any idea how i can access the options.html local storage values from my Javascript file in the extension? thanks!

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  • Send jQuery array to PHP post?

    - by FFish
    I have a javascript function that gathers two arrays, imagepaths and captions. I want to send with PHP's post to the same page $_SERVER['PHP_SELF'], but I really don't know where to start.. PHP: if (isset($_POST['Submit'])) { $edit_photos->update_xml($edit_photos->album_id, $_POST['src_arr'], $_POST['caption_arr']); // prevent resending data header("Location: " . $_SERVER['PHP_SELF'] . "?ref=" . $ref); } JS: function getImgData() { var imgData = { 'src_arr': [], 'caption_arr': []}; $('.album img').each(function(index){ imgData.src_arr.push($(this).attr('src')); imgData.caption_arr.push($(this).attr('alt')); }); return imgData; }; HTML: <form name="form1" method="post" action="<?php echo $_SERVER['PHP_SELF'] . "?ref=" . $ref; ?>">

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  • Using argument (this) passed via element eventhandler

    - by Kel
    Hey guys, I want to use the argument I pass (this) in a JS function and treat it as an jQuery variable. Example: <script> function useMe(obj){ $(obj).val(); ... ... ... } </script> <select id="selectid" onChange="useMe(this)"> <option>......</option> </select> Is there a possibility to treat the passed argument as a jQuery element? Btw. I need to do it this way, because the select-element isn't created on load. The select element will be created later asynchronously. So, this won't work: $("select").each(function (i){ var select_id = $(this).attr("id"); $(this).change(function(e){ because it doesn't exist yet. Thanks for your help.

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  • When is JavaScript's eval() not evil?

    - by Richard Turner
    I'm writing some JavaScript to parse user-entered functions (for spreadsheet-like functionality). Having parsed the formula I could convert it into JavaScript and run eval() on it to yield the result. However, I've always shied away from using eval() if I can avoid it because it's evil (and, rightly or wrongly, I've always thought it is even more evil in JavaScript because the code to be evaluated might be changed by the user). Obviously one has to use eval() to parse JSON (I presume that JS libraries use eval() for this somewhere, even if they run the JSON through a regex check first), but when else, other than when manipulating JSON, it is OK to use eval()?

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  • Django: tinyMCE and cross site javascript

    - by pistacchio
    Hi, follow this question, I was able to set some textareas in my admin page as richtext inputs. The most voted answer suggests to follow an example and is what i did. Also, it talks about a problem concerning "blank pages". I'm having the same problem and I'm not able to solve it. I have my media files served by a different server, so MEDIA_URL points to a different host with a different port. To simulate this in my dev environment, I also serve media files from a different port. Debugging the failing javascript, Chrome yelds: Unsafe JavaScript attempt to access frame with URL http://localhost:8000/admin/blog/post/add/ from frame with URL http://localhost:88/s3mangerie/js/tiny_mce/themes/advanced/image.htm. Domains, protocols and ports must match. How to solve this problem? Thanks

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  • In Android Browser link does not always execute onClick causing focus instead

    - by Artem
    I am trying to program a very standard JS behavior for a link using an HREF onClick handler, and I am facing a strange problem caused by what I believe to be focus/touch mode behavior on Android. Sometimes when I click on the link, instead of executing the action, it simply becomes selected/focused, with either just a focus rectangle or even also with a filled focus rectangle (selected as opposed to just focused?). The pseudo-code right now is <a href="#" onClick="toggleDivBelowToShowHide(); return false;">go</a> I have tried doing something like: <a href="#" onTouchStart="toggleDivBelowToShowHide(); return false;">go</a> But I still get the same pesky problem some of the time.

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  • Global variable life in Javascript - destroyed on a reload?

    - by Paul Nathan
    (I am learning Javascript) Problem: A page I am working on has 2 views, a data entry view with a textbox and a data rendering view. There is a a href src="currentpage#" link that switches between the 2 views. In order to transmit data from view to view, the javascript parses it from the current HTML and pushes it into the correct form for the other view. This is ugly and I want to refactor it out, ideally into some sort of global where it can be neatly rendered down into the view on command (I'm refactoring the code base to a point where I can AJAX it from a server). However, I am not certain about scoping rules and variable life in JS.

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  • Adding to the browser user agent string?

    - by stwissel
    I have a plug-in that handles its own url schema (something like mystuf:// ). If a user clicks on such a link when the plug-in isn't installed (s)he gets an ugly error. So I extended my installer to write into the Registry (for Internet Explorer) and the user.js (for Firefox) to ADD a custom string to the user agent string. These additions survive a browser upgrade nicely (Microsoft uses this technique to indicate the presence of the dotNet Framework). Now I need to extend this to Apple Safari and Google Chrome on all supported platforms. To be clear: I'm not looking how to REPLACE the user agent string, but how to amend it with additional information. Any hint?

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  • ASP.NET 3.5 C# : Combine images in one download

    - by Mark
    Hi All, I Would like to know if its possible to combine mulitple images in 1 download. On my homepage I'm showing 12 images which change depending on the country of the user. I notice this takes a lot of time to download for some users and i would like to know if it's possible to combine them into one download with an httphandler (in the way u can combina js and css) or even create 1 static image out of those 12. For an example check here link text Thanks for your time! Kind regards, Mark

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  • javascript arrays: adding entries

    - by Lyon
    Hi, I'm not sure how I would do this in Javascript. I want to create an array that would contain any number of error messages from my form. I read on websites that you define the key for that array when adding new entries. // Javascript var messages = new Array(); messages[0] = 'Message 1'; How can I add entries into my array using a similar method I normally do in PHP // PHP $messages = array(); $messages[] = 'Message 1'; // automatically assigned key 0 $messages[] = 'Message 2'; // automatically assigned key 1 Is it possible to emulate that in Javascript? I don't want to have to define the number of entries in my array as it can vary. Thanks for helping me out on this very basic js question. -Lyon

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  • infoWindow on MarkerClusterer

    - by vishwanath
    I need infoWindow to be opened instead of zooming in map, when clicking on the ClusterMarker. I am using Gmaps util library MarkerClusterer for creating cluster of markers. I tried changing following line in markerclusterer.js ClusterMarker_.prototype = new GOverlay(); with ClusterMarker_.prototype = new GMarker(); so that I can get the openInfoWindow() function in the clustermarker, but that didnt worked out. Got some error. If possible, Please suggest solution so that this can be done with MarkerClusterer. Or else any other library which will be able to do this. Any help will be appreciated.

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